JPH0541367Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a one-dimensional detector.

[Technological environment]

In recent years, one-dimensional detectors have tended to have higher densities, and the density has been increased year by year. However, the density is still small, and the scanning period is becoming proportionally slower as the density increases. Under these circumstances, a one-dimensional detector with higher density and higher speed has been required.

[Common technology]

Generally, a one-dimensional detector includes an image sensor. This image sensor is divided into many fine elements on its light-receiving surface, and when each element is irradiated with light, it sequentially sends a signal proportional to the amount of light in synchronization with an externally applied clock signal. Output.

[Conventional technology]

As a conventional technique, for example, Japanese Patent Application Laid-open No. 1983-
As shown in Japanese Patent No. 113729, there is a device in which the end surfaces of a two-dimensional image sensor and an optical fiber are joined, and the other end surfaces are arranged one-dimensionally so as to perform one-dimensional and two-dimensional mutual conversion.

A conventional one-dimensional detector consists of a two-dimensional image sensor and an optical sensor that performs one-dimensional and two-dimensional mutual conversion in which one end surface is bonded to the light receiving part of the two-dimensional image sensor and the other end surface is arranged in a one-dimensional shape. The device includes a fiber bundle and a clock generator that provides a clock signal to the two-dimensional image sensor.

Next, a conventional one-dimensional detector will be described in detail with reference to the drawings.

FIG. 4 is a perspective view showing an example of a conventional one-dimensional detector.

The one-dimensional detector shown in FIG. 2 includes a two-dimensional image sensor 1', one end surface 8' is joined to the light receiving part 2' of the two-dimensional image sensor 1', and the other end surface 4' is shaped like a one-dimensional image sensor. The image sensor 1 includes an optical fiber bundle 5' arranged in the same direction, and a clock generator 6' for supplying a clock signal to the two-dimensional image sensor 1'.
Next, the functions, operations, etc. of the configuration shown in the drawings will be explained in order. Optical fiber bundle 5'
Light A' incident from the end face 4' is subjected to one-dimensional two-dimensional conversion by the optical fiber bundle 5' and enters the light receiving portion 2' of the two-dimensional image sensor from the end face 8'. The light receiving section 2' performs photoelectric conversion and outputs the signal Z' in synchronization with the clock signal X' supplied from the clock generator 6'.

[Problem that the invention attempts to solve]

The conventional one-dimensional detector mentioned above uses a single two-dimensional image sensor as a light-receiving element, so due to its characteristics, the scanning speed per scan is about several tens of milliseconds to several hundred milliseconds, which is extremely slow for a one-dimensional detector. The drawback was that it was slow.

[Means for solving problems]

The one-dimensional detector of the present invention includes a plurality of one-dimensional image sensors each incorporating a plurality of light-receiving elements, and constituent units constituting the first end surface arranged in a one-dimensional manner to constitute the first end surface. The one-dimensional image sensors each having the same number of order as the remainder obtained by dividing the number of arrangement order of the constituent units constituting the second end face in one-to-one correspondence with the constituent units by the number of the plurality of one-dimensional image sensors. The structural unit whose order number is the same as the number of quotients resulting from the division and which is incorporated in the unit, and whose remainder after the division is zero, becomes a one-dimensional image sensor with the largest order number of the one-dimensional image sensor. a built-in optical fiber bundle connected to the light-receiving elements of the same order as the number of quotients resulting from the division, and a clock generator that provides independent clock signals to the plurality of one-dimensional image sensors and signal processing units, respectively. and the signal processing unit that generates an output signal synthesized from the output signals of the plurality of one-dimensional image sensors and the clock signal from the clock generator.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a partially enlarged view of the optical fiber bundle and one-dimensional image sensor shown in FIG. 1. FIG. 3 is a time chart of FIG. 1.

The one-dimensional detector shown in FIG. 1 includes one-dimensional image sensors 1, 2, 3, . . . each having j number of pixels.
..., N light receiving sections 21, 22, 23, ...,
M (M: light receiving part of the n-th one-dimensional image sensor)
One end face 31, 32, 33, ..., P (P:
An optical fiber bundle 5 is formed by joining an optical fiber bundle (end face of the optical fiber bundle joined to the light receiving part of the n-th one-dimensional image sensor) and disposing the other end face 4 in a one-dimensional manner.

Next, the functions, operations, etc. of the configuration shown in the drawings will be explained step by step with reference to FIG.

The light A incident from the end face 4 of the optical fiber bundle 5 is transmitted to the end face 4 of the optical fiber bundle 5.
1, 32, 33, ..., P, and each light receiving section 2 of the one-dimensional image sensor 1, 2, 3, ..., N
1, 22, 23, ..., M. Each of the one-dimensional image sensors 1, 2, 3, ..., N performs photoelectric conversion according to the amount of light incident on it, and receives signals a, b, c, ..., L (L: n-th one-dimensional image output signal (sensor output signal). At this time, as shown in FIG.
is the optical fiber 10 that constitutes it.
1,102,...,103,104,105,1
06,...,107,108,109,110,
..., 111, 112 (101: 1st optical fiber, 102: 2nd optical fiber, 103: n-1th optical fiber, 104: n-th optical fiber, 105: n+1th optical fiber Optical fiber, 106: n+2nd optical fiber, 107: 2×n−1th optical fiber, 108: 2×nth optical fiber, 109: 2×n+1th optical fiber, 110: 2×n+2nd optical fiber, 111: j×n−1th optical fiber, 112: j×nth optical fiber), the light A is transmitted to the light receiving part 21 of the one-dimensional image sensor 1. 101, 105, 109,...
102, 106, 110, ... are incident on the light receiving section 22 of the one-dimensional image sensor 2 in the order of to 103,1
07,...,111 in the order of 104,108,..., to the light receiving part M of the one-dimensional image sensor N.
112.

As shown in FIG. 3, each signal processing section 7 has a period t.
In synchronization with clock signals a', b', c', ..., L'(L': clock signal supplied to the n-th one-dimensional image sensor) whose phase is shifted by t/n with the clock signal of Output one-dimensional image sensors 1, 2,
3, ..., N output signals a, b, c, ..., L by the edges of each clock signal a', b', c', ..., L' are the clock signals a', b. ′、c′、…
..., the optical fibers 101, 102, ... in synchronization with the synchronous clock signal S of 1/n of L'.
..., 103, 104, 105, 106, ..., 1
07,108,109,110,...,111,
The sequential output signal r is output in the order of 112 as a signal R with a period of 1/(t×n).

At this time, the time required to scan the end face 4 once is:
Since each one-dimensional image sensor performs photoelectric conversion simultaneously and in parallel, the scanning time is substantially the same as that of one one-dimensional image sensor. By doing this, a high-density, high-speed one-dimensional image sensor can be easily obtained.

[Effect of idea]

The one-dimensional detector of the present invention uses multiple one-dimensional image sensors in combination to obtain a high-density one-dimensional detector even if the number of elements in each one-dimensional image sensor is small. Even if multiple one-dimensional image sensors with low operating clock frequencies are used, the scanning time is the same as that of a single one-dimensional image sensor, so as a high-density one-dimensional detector, the scanning speed for one time is from several hundred microseconds to several milliseconds. It has the tremendous effect of being able to obtain high-speed objects.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.
Fig. 2 is a partially enlarged view of the optical fiber bundle shown in Fig. 1, Fig. 3 is a time chart of Fig. 1,
FIG. 4 is a perspective view showing a conventional example. 1, 2, 3,..., H, N... one-dimensional image sensor, 1'... two-dimensional image sensor, 2'...
Light receiving part of two-dimensional image sensor, 4, 4'... End face of optical fiber bundle, 5, 5'... Optical fiber bundle, 6... Clock generator,
7, 7'...signal processing section, 21, 22, 23,...
..., I, M...light receiving part of one-dimensional image sensor,
31, 32, 33,..., K, P, 8'... end face of optical fiber bundle, 101, 102,...
..., 103, 104, 105, 106, ..., 1
07,108,109,110,...,111,
112...Optical fiber, a, b, c,
..., L, L'...image sensor output signal, a',
b', c', ..., L', X'...clock signal, A,
A'...Incoming light, S...Synchronized clock signal, R...
...Signal processing unit output signal.

Claims (1)

[Scope of utility model registration request] A plurality of one-dimensional image sensors incorporating a plurality of light receiving elements, and a plurality of one-dimensional image sensors forming a first end surface arranged one-dimensionally in a one-to-one correspondence with the structural units forming the first end surface. The number of arrangement order of the constituent units constituting the second end face is divided by the number of the plurality of one-dimensional image sensors, and the quotient by the division is obtained by dividing the number of the arrangement units of the plurality of one-dimensional image sensors built in the one-dimensional image sensors with the same number of remainders. The structural unit, which is connected to the light receiving element having the same ordinal number as the number, and the remainder of the division is zero, is the number of quotients resulting from the division, which is built into the one-dimensional image sensor having the largest ordinal number of the one-dimensional image sensor. an optical fiber bundle joined to the light-receiving elements of the same number as in order, and a clock generator that provides independent clock signals to the plurality of one-dimensional image sensors and signal processing units, respectively;
A one-dimensional detector comprising: the signal processing unit that generates an output signal synthesized from the output signals of the plurality of one-dimensional image sensors and the clock signal from the clock generator.